Yankee Hill Machine 5040 QDS Quick Deploy Iron Sight Set AR-15

The Yankee Hill Machine 5040 Q.D.S. (Quick Deploy Sight) Set delivers rapid target acquisition with spring-loaded deployment for AR-platform rifles. This black hardcoat anodized sight set provides backup sighting capability that activates instantly when primary optics fail. The robust construction withstands heavy recoil and environmental conditions while maintaining zero retention.

What Makes This Different

Unlike fixed backup iron sights, the YHM 5040 features spring-assisted deployment that raises both front and rear sights simultaneously with a single button press. The low-profile folded position sits just 0.4 inches above the rail, clearing most optic housings without interference. Hardcoat anodizing provides superior corrosion resistance compared to standard mil-spec finishes, extending service life in harsh conditions.

Key Features

• Spring-loaded quick deployment mechanism for instant sight activation
• Black hardcoat anodized finish resists wear and environmental damage
• Low-profile folded design clears standard and magnified optics
• Windage and elevation adjustments with positive click detents
• Standard A2-style front sight post with tool-free adjustment
• Dual-aperture rear sight with 0.070" and 0.200" openings
• Compatible with all MIL-STD-1913 Picatinny rail systems

Field testing demonstrates consistent zero retention through temperature cycling and vibration exposure typical of tactical applications. The sight set maintains accuracy standards for close-quarters engagement and intermediate-range precision work. Corrosion testing shows the hardcoat finish outperforms standard anodizing in salt spray environments by 300% margin.

Technical Specs

• Material: 6061-T6 aluminum construction
• Finish: Black hardcoat anodized per MIL-A-8625 Type III
• Height: 0.4 inches folded, 1.46 inches deployed
• Weight: 3.2 ounces complete set
• Sight radius: Varies with rail configuration
• Mounting: Standard Picatinny rail clamp system
• Country of origin: United States
• Warranty: Limited lifetime manufacturer warranty

Professional armorers specify YHM sights for duty rifles requiring reliable backup sighting systems. The combination of rapid deployment and proven durability makes this sight set essential equipment for serious rifle configurations where optic failure cannot compromise mission success.